Not sure, but i think their 22" line is discontinued though. I have the Dell 2209WA and was checking out their website out of curiosity, then i saw they have a new e-IPS 23" and i think i also saw a 21.5". These two also come with a display port interface which mine lacks. However, they seem to be a bit slower than my previous generation 22", so it's all a balancing act.
As for quality and reliability, i'm very pleased.
These Dell models we're talking about usually have panels made by LG, they sport a sturdy, stable base with a vertical pivot mount, good ergonomics and firm adjustment points so that they won't drift or lose alignment due to their own weight.
They also come with a 3 year zero pixel defect warrantee. That's not just stuck pixels, or stuck pixels of a certain colour as some brands word their warrantees in the fine print but zero pixel defects of any kind whatsoever, with on-site replacement to boot. I think this coverage can also be extended to 5 years for a small fee.
Colours and viewing angles are superb (note: do some calibration though, even if only using online guides and doing it by eye it makes a tremendous difference), it's not as slow as people might think (i've had tons of gaming on mine and it does fine), the 60Hz refresh rate doesn't make your eyes hurt because refresh works differently than in CRTs, it's reliable and has great service/replacement options. I bought mine from a shop in the UK that ships all over the EU to save on cost (local prices were 100-150 Euros higher), got it in a week and i'm covered by an EU-wide warrantee so even if it starts acting up i can contact my local Dell dealership and have a replacement arrive at my doorstep.
If you buy directly from your local dealer you can go even further, to the point of being a royal pain of a customer and Dell will encourage you to do so
When looking around in hardware forums prior to making my decision, there were people saying how they'd talked on the phone directly to the salespersons that gave them reduced price quotes, mentioned slight or very minor manufacturing defects and the salesmen encouraged them to ship their monitors back for refurbishment and have a new one shipped to to them...some people went through 2-3 different monitors this way.